An Effectiveness and Safety Study of CNTO 1275 in Patients With Active Psoriatic Arthritis

The safety and scientific validity of this study is the responsibility of the study sponsor and investigators. Listing a study does not mean it has been evaluated by the U.S. Federal Government.
Read our disclaimer for details.

The purpose of this study is to evaluate the effectiveness and safety of CNTO 1275 (ustekinumab) in patients with psoriatic arthritis.

Condition or disease

Intervention/treatment

Phase

Psoriatic Arthritis

Drug: CNTO 1275 63 mgDrug: Placebo

Phase 2

Detailed Description:

This study is a randomized (the study drug is assigned by chance), double-blind (neither physician nor the patient knows the treatment that the patient receives), parallel-group (each group of patients will be treated at the same time), multicenter study to evaluate the effectiveness and safety of CNTO 1275 compared to placebo in the treatment of patients with active psoriatic arthritis. Patients will be randomized in 1:1 ratio to 1 of 2 treatment groups (CNTO 1275 63 mg and placebo). Patients will be randomly assigned to receive study medication up to Week 12 and will be followed through Week 36 to monitor safety and efficacy. Patients randomly assigned to placebo will crossover to receive CNTO 1275 63 mg at Weeks 12 and 16. Patients randomly assigned to CNTO 1275 will receive placebo at Weeks 12 and 16 to maintain the blind. The duration of participation for an individual patient in the study will be up to 36 weeks.

Number of Participants With an American College of Rheumatology (ACR) 20 Response at Week 12 [ Time Frame: Week 0 to Week 12 ]

ACR 20 response is an improvement of greater than or equal to 20 percentage in both tender and swollen joint count and in 3 to 5 assessments (patient's assessment of pain visual analog scale [VAS] with 0, no pain to 10, worst pain; patient's and physician's global assessment of disease activity VAS scales: overall disease activity [0, very well to 10, very poor and 0, no arthritis activity to 10, extremely active, respectively]; Health Assessment Questionnaire [HAQ]: 20-questions on life activities [0, no difficulty to 3, inability to perform a task]; C-reactive protein[CRP]).

Secondary Outcome Measures :

Number of Participants With an American College of Rheumatology (ACR) 50 Response at Week 12 [ Time Frame: Week 12 ]

ACR 50 response is an improvement of greater than or equal to 50 percentage in both tender and swollen joint count and in 3 to 5 assessments (patient's assessment of pain visual analog scale [VAS] with 0, no pain to 10, worst pain; patient's and physician's global assessment of disease activity VAS scales: overall disease activity [0, very well to 10, very poor and 0, no arthritis activity to 10, extremely active, respectively]; Health Assessment Questionnaire [HAQ]: 20-questions on life activities [0, no difficulty to 3, inability to perform a task]; C-reactive protein[CRP]).

Number of Participants With an American College of Rheumatology (ACR) 70 Response at Week 12 [ Time Frame: Week 12 ]

ACR 70 response is an improvement of greater than or equal to 70 percentage in both tender and swollen joint count and in 3 to 5 assessments (patient's assessment of pain visual analog scale [VAS] with 0, no pain to 10, worst pain; patient's and physician's global assessment of disease activity VAS scales: overall disease activity [0, very well to 10, very poor and 0, no arthritis activity to 10, extremely active, respectively]; Health Assessment Questionnaire [HAQ]: 20-questions on life activities [0, no difficulty to 3, inability to perform a task]; C-reactive protein[CRP]).

The HAQ is a 20-question instrument assesses the degree of difficulty a person has in accomplishing tasks in 8 functional areas (dressing, arising, eating, walking, hygiene, reaching, gripping, and activities of daily living). Responses in each functional area are scored from 0, indicating no difficulty, to 3, indicating inability to perform a task in that area based on the worst score from the questions that pertain to that task. The HAQ score is determined by the average of the 8 scores.

Number of Participants With Psoriasis Area and Severity Index (PASI) Score of 75 Percent at Week 12 [ Time Frame: Week 12 ]

Number of participants achieving greater than or equal to 75 perccentage mprovement PASI at Week 12. PASI is widely used tool for the measurement of severity of psoriasis. This is a test of how bad person's psoriasis is. The combine redness, scaling, and thickness, as well as overall body involvement determine the PASI score. The scale ranges from 0 (best) to 72 (worst).

Change in Dermatology Life Quality Index (DLQI) from baseline at Week 12. The DLQI is a 10 item questionnaire, is designed to assess the impact of the disease on a participant's quality of life, can be used to assess 6 different aspects that may affect quality of life: symptoms and feelings, daily activities, leisure, work or school performance, personal relationships, and treatment. The score ranges from 0 (better quality of life) to 30 (worse quality of life).

Choosing to participate in a study is an important personal decision. Talk with your doctor and family members or friends about deciding to join a study. To learn more about this study, you or your doctor may contact the study research staff using the contacts provided below. For general information, Learn About Clinical Studies.

Ages Eligible for Study:

18 Years and older (Adult, Older Adult)

Sexes Eligible for Study:

All

Accepts Healthy Volunteers:

No

Criteria

Inclusion Criteria:

Have had active psoriatic arthritis for at least 6 months prior to administration of first study injection

Have an active plaque psoriasis (defined as a lesion of at least 2 cm in diameter), but not in armpits, on chest between breasts or groin

Women of childbearing potential and all men must be using an effective method of birth control measures (eg, abstinence, oral contraceptives, intrauterine device, barrier method with spermicide, or surgical sterilization) and must agree to continue to use such measures until 12 months after receiving the last injection of study agent

Have an active arthritis despite disease-modifying anti-rheumatic drugs (DMARD) such as leflunomide, gold, sulfasalazine, but not including methotrexate) or non-steroidal anti-inflammatory agents (NSAID) such as aspirin, ibuprofen, naproxen) therapy. DMARD therapy is defined as taking a DMARD for at least 3 months, or evidence of not tolerating DMARD. NSAID therapy is defined as taking an NSAID for at least 4 weeks

If the patients are using methotrexate (MTX), they should have started treatment at least 3 months prior to the first administration of study agent and should have no serious toxic side effects attributable to MTX

Have no signs or symptoms suggestive of active tuberculosis upon medical history, physical examination and chest X-ray

Exclusion Criteria:

Have received DMARDs, other than methotrexate, within 4 weeks prior to the randomization visit

Have used any biologic within the previous 3 months or 5 times the half-life of the biologic, whichever is longer

Have any known cancer or have a history of cancer within the previous 5 years (with the following exception: have had basal cell carcinoma or squamous cell carcinoma in situ of the skin that has been treated, with no evidence of recurrence)